PTC Heater Circuit Troubleshooting

  1. Measure the voltage between the climate control unit 32P connector terminal No. 17 and body ground.
Is there battery voltage?
YES -
Go to Step 9 .
NO -
Repair open in the wire between the under-hood fuse /relay box and the climate control unit. If the wire is OK, replace the under-hood fuse /relay box. ■